How to upload an image to the server using PHP?

Question

PHP

There is a tag: <img src="images/image.jpg">how to upload exactly this picture that is in the tag? Not through <input type="file">, namely the one in the tag?
PS Instead of images/image.jpg there is a link generated withtoDataURL();

Answer 1

fi2.php.net/manual/ru/function.copy.php
fi2.php.net/manual/ru/function.file-get-contents.php

Answer 2

Download from where and where?

Answer 3

1) display the image on a hidden canvas
2) generate a base64 code for the content of the canvas
3) add a hidden field and write its value to this code.
4) on the server it will be in the $_POST variable